In 2004, researchers found a sensor on the coast of Australia that they had previously attached to a huge three-meter great white shark. So scientists wanted to look into immigration, but in the end they discovered something they didn't even expect. The sensor showed that at some point the shark suddenly went to a depth of 580 m. It was as if something pulled the huge predator to the bottom. Then its temperature rose to 25.5°, but in the ocean at such a depth, such a high temperature can only be in someone's stomach. It seems like there is some kind of predator above her. But who can eat a giant white shark? And if she is too much for him, then what can we say about the person? So what Australian monster is killing

giant sharks right now? Alpha is what the researchers named the female Blue Shark they chose to track. It was part of a large-scale study. In 2003, an experiment was conducted in Australia to install special sensors on the dorsal fins of great white sharks. So scientists monitored their premises using GPS. Data on temperature and other parameters were collected. Alpha also got its name for its considerable dimensions. Its length reached 3 m. The largest females of this species can grow up to 6 m in length. And that's like five German shepherds. In addition, such a shark weighs up to 2300 kg. A similar giant specimen was even filmed for the Shark Week program.

There she was affectionately nicknamed Deep Blue. But, as it turned out, this is not the limit. According to the Guinness Book of Records, one of the largest great white sharks ever found was 11 m long. Moreover, it was caught in the 1870s in Australia, where Alpha also lived. Yes, compared to record-breaking sharks, as well as some other underwater inhabitants, Alpha is not the biggest fish in the ocean. But, despite its size, the great white shark may well hold the title of the fiercest predator in the entire ocean. That's why scientists were surprised to find the alpha sensor washed ashore a few months after the experiment began. But most surprisingly, it was corroded by stomach acid. Is there anyone capable of

resisting such a formidable predator? Sharks usually don't wait for a threat, because if there's anyone to be afraid of in the ocean, it's themselves. The thing is that sharks have many advantages for successful hunting. First, it's a super sense of smell. Sharks can sense prey from great distances, especially if it is already injured. One drop of blood per 100 liters of water is enough Secondly, white sharks have the ability to capture electrical charges of up vol. This is enough to detect the heartbeat of a fish that has hidden.

Thirdly, super hearing. Rapid, irregularly pulsating sounds at frequencies below 600 Hz, emitted by wounded prey and spawning fish, can alert predatory sharks from over 1.5 km away. And most importantly, a series of fluid-filled sensory canals on either side of the shark's body respond to changes in pressure and motion, helping it sense the presence of objects in the water. All these facts drive scientists into a dead end. How, with so many superpowers, did Alpha not notice the approach of another predator. And even more so, why couldn't she protect herself from him? The white shark is ruthless with its prey.

In addition, great white sharks often choose a larger target, such as a seal or sea lion. Their optical shape and powerful tail allow great white sharks to run at speeds of over 60 km/h. If the prey is swimming on the surface, the shark can jump vertically out of the water with its mouth open and grab the prey. This predator has over 300 serrated triangular teeth 5 cm long, which is 2 to 3 times longer than human teeth. And they are also arranged in five or six rows. The shark's teeth instantly pierce the flesh and tear it apart. Most bites occur on the front teeth, which are the largest. The great white shark, like all other sharks, has a spare row of teeth in its jaw. And when one of them is lost, the other

steps forward. Because of this, Great White Sharks always have razor-sharp weapons at the ready. By the way, among marine animals with the most powerful bite force, the great white shark ranks second at 400 psi. Therefore, it is very difficult to imagine what predator could surpass such a versatile hunter and attack a great white shark. The Smithsonian Institution hired filmmaker David Ricks to document a project tracking a three-meter female shark When Dani received the sensor, David was no less surprised than the others. At that moment, he realized that now his task would not just be to create a scientific educational video, but to film a real investigation with elements of detective and horror.

David was inspired and was already thinking through a plan for an expedition to the death zone, where Alpha was probably in the last seconds of her life. But later the director will regret it greatly, realizing that the death zone got its name for a reason. It is very difficult to understand who could defeat a shark, because most people associate this predator with fearlessness and danger. But in fact, she can be afraid of even such harmless animals as birds, for example, martins, pelicans or albatrosses. They can attack a shark with their fangs and beaks if it is close to the surface of the water. Also, believe it or not, a shark can be seriously scared by a Buffalo. Yes, such meetings happen quite rarely. But if

a Buffalo passes near a shore where a shark is hunting, it can scare it with its dull roar. But there was someone more sinister involved in the Alpha story, and David Ricks was going to find out who. Together with his team, he decided to descend to the bottom of the kill zone in the waters off the southern coast of Australia. To do this, the team acquired a large special diving cage. It was made of a sturdy metal frame and lawnmower parts. At the same time, the entire structure was covered with five layers of fiberglass for greater reliability.

The death zone is a large underwater valley 5 km deep. This whole area is just teeming with life. The thing is that the cracks in the bottom here are bursting through with gases, heated by magma. They raise the temperature of the water in the valley and attract thousands of species of marine animals, which hungry predators are happy to feast on. David was determined and was going to sink to the bottom in search of a clue that would lead him to the killer of a three-meter white shark. But already at a depth of 20 m, his enthusiasm quickly faded. The thing is, the team found itself surrounded by not one or two, but as many as 40-category sharks. And then a pack of other underwater predators sensed the people. The team did not risk

diving further because they were afraid they might be attacked, so they surfaced. But David managed to catch a glimpse of the main suspects out of the corner of his eye. And these were killer whales. They are also called killer whales because of their ferocity and large size. If the alpha was attacked by a male, it could be twice the size of the shark. The largest orca ever recorded was almost 10 meters long and weighed over 10 tons. And this is like two African elephants. Although the killer whale has fewer teeth than the great white shark, only 48, each of them is twice as long. With their help, killer whales tear apart the bodies of large prey. Whereas for white

sharks, calves and sea lions are a grand dinner. For a killer whale, it's just a snack that it can swallow whole. Researchers and David Ricks do not rule out that killer whales could indeed hunt for golf. Or they could perceive the shark as a stranger who threatens their young. But something just doesn't add up. Killer whales always hunt on the surface. They rarely dive deeper than a hundred meters to find food. And the creature that attacked the alpha dragged the shark to a considerable depth. In addition, killer whales, like humans, have a body temperature of about 37.8°C. And as you remember, Alpha's temperature sensor only warmed up to 25. But who could it be then, if not an

orca? Maybe a sperm whale. This is one of the largest whale species in the world. It can grow up to 20 m, which is 6.5 times larger than the alpha. And it weighs as much as 6.5 African elephants. Such a huge predator can dive even deeper than what was recorded by the Alpha sensor, at a depth of about 2,500 m. The sperm whale uses echolocation to focus on the pike of a potential prey. It produces a series of clicks that are the loudest sounds made by animals in the world. In this way, the sperm whale scares other predators such as killer whales away from its prey and disorients the victim. With its massive tail, it is capable of killing absolutely any marine creature.

Maybe that's what happened to poor Alpha? There are also many discrepancies in this version. Usually, sharks are not part of the sperm whale's diet. It feeds mostly on cephalopods, including giant squid. In addition, the size of the Sperm Whale does not allow it to make very fast and sharp movements. It turns out that he could not have pulled the Alpha sharply to the depth, as the sensor recorded. But the killer whale and sperm whale are not all suspects. Another underwater giant creature lurks in the ocean south of Australia. It is so dangerous that people still cannot understand whether it is a real animal or a mythical monster.

The soul simply flees at the sight of a colossal squid. Representatives of this species can weigh about 500 kg. Although, judging by the beaks and beaks found in the stomachs of some of them, such squids can be much heavier, namely about 700 kg, like 2 grizzly bears. The maximum total length of such a squid is 10 m, which is twice the length of Alpha. And he hunts no worse than white sharks. Having spotted prey, it first rushes forward sharply, using its giant fins for movement. Then it releases two- to two-meter-long tentacles, and the hooks at their ends cling to the prey and prevent it from escaping. After that, the squid spreads its eight

tentacles with numerous suckers and embraces the moving prey, bringing it closer to its beak. And the squid's is very sharp and immediately shreds the victim's flesh into small pieces. Scientists consider him another suspect in the Alpha case. After all, colossal squids live at a depth of 600 m, where the sensor recorded the death of the great white shark. However, researchers doubt that it could have caused Alpha's death, because usually, on the contrary, it is the squid that becomes the shark's victim. But in 2020, a shark with traces of the tentacles of a huge squid was found in the Pacific Ocean, which,

by the way, also washes Australia. It is assumed that Alpha could have hunted a squid, chasing it at great depths, but then lost the fight and was eaten. Only in this case we are talking about a squid of much larger dimensions than the one we call colossal. Even the ancient Greek philosopher Aristotle mentioned in his writings a certain marine reptile that had a head the size of a barrel and arms five cubits long. And in the 11th century, rumors circulated in Iceland about a creature living in the ocean that could swallow an entire Viking fleet. Before all this, in 1752, the Danish bishop and naturalist Erik Pontoppidan

collected numerous witnesses to the attacks of this nightmarish monster, which people nicknamed the kraken. According to them, this creature could easily drag even warships with cannons to the bottom, wrapping its giant tentacles around the masts. After the ship sank, the kraken ate the people and then digested them for three months. The monster moved, always accompanied by countless fish, feeding on the remains of its grisly dinner. Therefore, fishermen were often happy to find a place with a rich catch, without even suspecting what kind of monster was nearby. In 1774, English captain Robert Jameson testified under oath in court that he had seen this monster with his own eyes and that it

was 9 m high and 2.5 km long, which is as much as 833 Alphas. In the 20th century, stories about the kraken were considered the inventions of cowardly sailors with poor eyesight. But already in the 21st century, scientists found indirect evidence of the existence of the kraken. Japanese scientists filmed a live underwater monster 26.5 meters long. A creature of this size could really grab a ship with its claws and drag it into the depths of the ocean along with the people. And just recently, a new sensation happened. In US waters, researchers managed to capture an unusually large squid. So is the huge and bloodthirsty kraken not a fiction, but a real creature? And the case with Alpha could be another confirmation of this.

But there is one but. After all, as the sensor on the shark showed, the creature that ate it was warm-blooded, while the colossal squid is cold-blooded. It turns out that there is no predator in the entire ocean that could attack a great white shark on such a terrible day. At least for now. In prehistoric times, underwater animals were much larger and more dangerous. But they died out a long time ago, or maybe not. You can see a giant shark in these stunning footage. Some people believe that the animal in the frame is actually a baby Megalodon.

This is a prehistoric monster that became extinct about 2.5 million years ago and was the ancient ancestor of white sharks. On the screen you see one megalodon tooth, compared to the tooth of a modern great white shark. It is actually the size of an adult's palm. Its length is about 18 cm. In addition, the tooth is very thick and has many fine serrations. Now imagine a mouth with 276 of these. And they're arranged in five rows. Accordingly, the animal itself was of colossal size. It is believed that the length of the megalodon could be 30 m.

This is more than 10 alpha sharks. The force of its bite was equivalent to the fall of a huge cruise anchor, which can weigh up to 11 tons. This predator had its teeth on huge turtles, dolphins, and even whales. Scientists have estimated that due to its enormous size, Megalodon could swim at a speed of 5 m/sku, twice as fast as any modern shark. Upon seeing the victim, he crashed head-on into her at high speed. The prey had broken bones and damaged vital organs located in the chest. Within a few short moments, the victim was dying from severe internal injuries.

It is believed that Megalodon was the best hunter in the entire ocean. Modern scientists are skeptical of suggestions that Megalodon might not have become extinct. After all, if such a monster had survived to this day, it would probably have been noticed by researchers. Most likely, it would hunt alongside great white sharks, its closest relatives. But scientists did not take into account that Megalodon could hunt not with sharks, but on them. Then he may well turn out to be the predator that dragged the alpha to the bottom. But there is another monster that can deal with not only the great white shark, but also the megalodon itself. Just look at this tooth. It is almost twice as large as that of Megalodon. And

it belongs to Melville's Leviathan, a historical whale monster that lived about 12 million years ago. It was slightly smaller than Megalodon, only 17.5 m in length, but its snout was short and wide, which allowed the animal to develop a powerful bite force. Leviathan's teeth were deeply embedded in the jaw bones and held its prey in a death grip. But most importantly, this tooth was found in Melbourne, Australia, in the same waters where Alpha lived. This tooth has been lying at the bottom for millions of years and cannot belong to a modern individual. And therefore, it is not proof that Melville's Leviathan will not die out. But even modern technology is not able to

explore all the depressions and cracks on the ocean floor, which means that we probably still cannot make such a claim. Therefore, I would advise Australian sailors to be careful when they go out to sea. After all, who knows, maybe someone will drag them to the bottom. But in the end, the researchers, along with David Ricks and his team, ultimately came to a very prosaic conclusion. According to them, Alpha was most likely killed by another great white shark. The thing is that cannibalism is common for this species. And after tracking the migration of giant sharks, scientists determined that their path passed through the region where the alpha was killed. But temperature data

and sensors refute this theory. After all, the maximum temperature in a shark's stomach can be 21°C, while Alpha's temperature jumped to 25°C before death. But experts have their own hypothesis on this matter. They believe that a larger shark, due to its size, may have a slightly higher temperature. It sounds like it's being pulled by the ears. What do you think? Write in the comments.